SUPPLEMENTARY MINERAL RESERVE INFORMATION (UNAUDITED) (Details) oz in Millions, lb in Millions	12 Months Ended
	Dec. 31, 2021 lb oz $ / lb $ / oz	Jan. 01, 2023
PT Freeport Indonesia | Forecast
Ownership percentage		48.76%
Copper
Estimated Recoverable Proven And Probable Reserves	110,800
Long Term Average Price Used To Estimate Recoverable Reserves | $ / lb	2.50
Three Year Average Price | $ / lb	3.25
Gold
Estimated Recoverable Proven And Probable Reserves | oz	27.1
Long Term Average Price Used To Estimate Recoverable Reserves | $ / oz	1,200
Three Year Average Price | $ / oz	1,654
Molybdenum
Estimated Recoverable Proven And Probable Reserves	3,430
Long Term Average Price Used To Estimate Recoverable Reserves | $ / lb	10
Three Year Average Price | $ / lb	11.97
Silver
Long Term Average Price Used To Estimate Recoverable Reserves | $ / oz	15
Consolidated Basis [Member] | Copper
Estimated Recoverable Proven And Probable Reserves	107,200
Consolidated Basis [Member] | Gold
Estimated Recoverable Proven And Probable Reserves | oz	27.1
Consolidated Basis [Member] | Molybdenum
Estimated Recoverable Proven And Probable Reserves	3,390
Consolidated Basis [Member] | Silver
Estimated Recoverable Proven And Probable Reserves | oz	346.0
Consolidated Basis [Member] | Indonesia | Copper
Estimated Recoverable Proven And Probable Reserves	32,200
Consolidated Basis [Member] | Indonesia | Gold
Estimated Recoverable Proven And Probable Reserves | oz	26.6
Consolidated Basis [Member] | Indonesia | Molybdenum
Estimated Recoverable Proven And Probable Reserves	0